In today’s environment of looming economic challenges, increasingly complex regulations, and reduced engineering staff, you can rely on SEL to provide solutions that help you operate more safely and efficiently than ever before. SEL solutions and devices are interoperable and are designed to be implemented in modular stages and integrated with other systems.
Implement a plant-wide system or start with a single relay and scale up to a complete, integrated power management system over time. An SEL solution is always able to flex and grow with your business needs.
And no matter what approach you choose, you’ll have unlimited access to technical support as long as you have SEL products in service.
SEL products are designed and manufactured for the world’s most challenging environments, exceeding all industry standards for temperature, shock, and electric stress. An optional conformal coating for circuit boards adds an extra level of protection against contaminants in extreme environments.
Every SEL product comes with a ten-year warranty—the best in the electric power industry. If any product fails under warranty, we’ll repair or replace it for free.
Prefabricated retrofit bezels, easy mounting adapters, flexible I/O options, and fast settings make it easy to upgrade your protection systems. Programmable buttons, and user-configurable faceplate labels make SEL relays easy to use.
Use SEL products to protect essential electrical infrastructure, maximize uptime, keep workers safe, drive process improvement, and reduce energy costs and consumption.
Electrical feeder protection, automation, and control capabilities, all in one compact package.
Comprehensive motor protection plus arc-flash detection and power metering. Install the SEL-849 inside a motor control center (MCC), and connect it to an external HMI if desired.
Complete substation bay control with high-speed breaker protection and simplified settings in one economical system. The SEL-451 offers flexible bus configurations for easy status indication and control of up to 20 disconnect switches and two breakers.
Reliable, comprehensive protection for generators of any size. The SEL-700G also features flexible I/O, advanced communications capabilities, and a variety of mounting options.
A versatile relay with comprehensive transformer protection features and built-in metering functions. The SEL-787 is rated for hazardous and potentially explosive environments.
Synchronous and induction motor protection, starting control, broken rotor bar detection, and built-in arc-flash detection. The SEL-710-5 also supports power factor regulation.
Arc-flash mitigation and high- and low-impedance fault detection are built into our protective relays, making it easier to implement robust, coordinated electric safety solutions.
SEL provides an integrated, scalable arc-flash mitigation solution in low- and medium-voltage switchgear.
These SEL products are available with integrated arc-flash mitigation features:
Industrial facilities seeking to implement arc-flash mitigation with electrical bus protection schemes can use SEL bus differential relays to accelerate fault detection and reduce fault duration in switchgear and buses. High- and low-impedance bus differential schemes provide fast detection (less than 1.5 cycles) and secure fault clearing—reducing incident energy without impacting upstream or downstream devices and with no manual intervention.
Use these SEL products to add arc-flash protection to your bus differential protection scheme:
SEL power control and automation solutions securely integrate the electric power system’s status and data into plant control systems for increased efficiency and better decision-making.
Monitor the electric power system to ensure power quality and manage consumption. Pair the SEL-735 with SEL meter reporting software to optimize your system and reduce costs by analyzing data, identifying usage trends, and diagnosing system problems.
Our most powerful automation controller—ideal for automation and integration of protection systems, both large and small.
Remote data acquisition in a rugged, modular platform designed and built for critical applications that require 24/7 availability. Choose versions with 4 or 10 slots, and mix and match the I/O modules to fit your application. Each Axion becomes a node in your control network, sending deterministic fiber-optic communications to remote terminal units (RTUs) and relays.
A hardened computer built to withstand harsh environments and keep critical processes running. SEL hardened computers achieve over ten times the mean time between failures (MTBF) of typical industrial computers and come with our unconditional ten-year warranty.
Use SEL devices to create a local area network and allow data exchange between relays and automation controllers in your power system.
The industry’s first and most reliable field-hardened software-defined networking (SDN)-enabled network switch. High-speed failover maintains your IEC 61850 protection systems, even during equipment failures.
A router, VPN endpoint, and firewall device with strong, easy-to-manage cybersecurity and physical antitampering features. Protect and manage access to multiple IEDs from a single, secure device.
SEL power system protection and control solutions prevent process interruption, maintain uptime, and protect your operational technology networks against cyber attacks. Our products and solutions are designed with simplicity and resilience in mind.
Ensure power system resiliency in the event of electrical service interruptions or utility grid failures. SEL powerMAX Power Management and Control Systems feature:
powerMAX Power Management Solutions —Our expert engineers can design and commission a fully integrated, turnkey power management solution that ensures maximum control and reliability.
SEL Engineering Services can partner with you to create secure, layered defenses for your operational technology (OT) systems and make sure they stay secure with streamlined full lifecycle support.
Let us partner with you to create an SEL solution for your system. From engineering studies and system design through commissioning and training, SEL engineers bring inventiveness and a deep understanding of the fundamental principles of electric power systems to every project. No matter how complex or sophisticated the system, we can help you protect, simplify, and control it.
Electric arc-flash events, which can produce intense heat, ultraviolet radiation, blast pressure, flying shrapnel, and deafening sound waves, can be deadly to nearby workers and destroy valuable equipment. See how an integrated SEL arc-flash solution mitigated a potentially devastating event at one North American mining operation.
Energy-intensive industries can realize significant benefits by making more efficient use of electric power resources. See how an SEL metering solution can help improve process efficiency and reduce electrical costs.
We’re happy to answer all your questions and help develop the best solution for your needs.
Every SEL solution comes with lifetime technical support, free of charge.
There are no service contracts, time limits, or expiration dates. No matter how often you call or how long your SEL products have been in service, you’ll reach a friendly human who can provide the service and support you need.
Our support teams are stationed in regional offices around the world and staffed with application engineers who are experts in our products and in power system applications. We’re always ready with the information and resources needed to keep your SEL solution working effectively.